Shearing-clippers



(No Model.) 2 Sheets-Sheet 1. E. A. GOGHRAN. SHEARING GLIPPERS.

' No. 508,163. Patented Nov. 7, 1893.

WITNESSES: I I INVENTOR 7 ATTORNEf (No Model 2 Sheets-Sheet 2.'

E. A. GOOHRAN. SHEARING GLIPPEBS.

N0. 508,163. Patented Nov. 7, 1893.

WITNESSES: W/I/I/l/b'H/I/I-l INVENTOR 13 2%" L 40 BY ATTORNEY m': NATIONAL um ccccccc NG COMPANY.

WASHINGTON. n, c.

UNITED STATES PATENT OFFICE.

EDWARD A. OOCHRAN, OF BROOKLYN, NEW YORK.

SHEARING -CL|PPERS.

SPECIFICATION forming part of Letters Patent No. 508,163, dated November 7, 1893.

Serial No. 458,012. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD A. COOHRAN, a citizen of the United States, residing at Brooklyn, in the countyof Kings and State of New York, have invented certain new and useful Improvements in Shearing-Clippers, of which the'following is a specification.

This invention is applicable to clippers used in shearing or clipping human hair, animal hair, or wool, or other purposes.

The invention relates to clippers, wherein the cutter-plate is reciprocated from one extremity of its stroke to the other extremity of its stroke, and back again, by each single motion of the movable handle, as described in my separate patent application, filed October 10, 1892, Serial No. 448,309; the object of thus doubly reciprocating the cutter plate at each stroke of the movable handle being to multiply the capacity of the tool withoutrequiring any more rapid or increased range of movement of the handsin operating the clip; per than heretofore.

My invention consists in certain novel fea tures of construction, arrangement and combination of the parts adapted for concentrating the mechanical connection between the movable handle and the reciprocating mechanism of the movable cutter; also for arranging the handle-spring for convenient access and adjustment and in ordert'o accommodate the movable handle; and alsoin certain other details of improvement, as hereinafter fully described and claimed.

Referring to the. accompanying drawings, in which similar characters of reference indi cate corresponding parts throughout the several views: Figure 1, represents a sectional plan view of the hair clipper embodying my invention; said view appearing on the line w-w, Fig. 3; the movable handle 5, appearing at its outer extremity of stroke; Fig. 2, a similar view, showing the movable handle at an intermediate position of stroke; Fig. 3, a longitudinal section of Fig. 1, taken on the line a;0c; Fig. 4, a transverse section of Fig. 1, taken on the line yy, and Fig. 5, a transverse section of Fig.1, taken on the line zz.

The stationary comb-plate 1, bearing a series of shearing teeth, forms the base of the tool wherein the movable cutter plate 2, also bearing a series of shearing teeth, is mounted and guided by means of the studs 13, which project through said comb plate 1, into the slots 14, of said cutter plate. The housing 3, of the tool carries the stationary handle 4, integral therewith, and is secured to the combplate 1, by means of a stud 10, and clamping screw 11, between which and the top surface of the housing is interposed a warped spring washer 12, by means of which the said housing 3, is caused to bear with elastic pressure at its projections 37. In other respects the housing 3 is separated from the cutter plate 2 and comb plate 1,so that the tension of the spring 12 is applied to the cutter plate near its teeth in order to keep them in shearing contact with the teeth of the comb plate and the wear of the projections 37 is taken up by the approach of the housing 3 toward the comb plate 1. An opening 38, is provided at the back of the housing for the reception of the movable handle 5, which is pivoted on the stud 6, secured in the comb plate, as indicated in section in Fig.4. The cutter-plate 2, is reciprocated back and forth to such an extent that its teeth pass two inter-spaces of the teeth upon the comb-plate at each direction of motion.

The movable handle 5, is provided with a projecting toothed segment 20, which engages witha toothed segment 19, that turns upon a pivot 17, depending from the top of the housing 3, as appears in section in Figs. 1 and 5. The segmentl9, carries atoggle bar 15, jointed at 40, to another toggle bar 16, which is pivoted upon the stud 18, attached to the movable cutter plate 2. The proportions of the radii of the segments 19, 20, are preferably such that'but a slight angular motion of the movable handle 5,will produce a much greater angular motion of the toggle bars 15, 16.

handle 4, as illustrated in full lines in Fig. 1, the toggle bars 15, 16, occupy one extreme angular position, as indicated by full lines in Fig. 1, so that the cutter-plate 2, is moved to the extreme in one direction of stroke, and when the movable handle 5, is moved to an intermediate position, as in Fig. 2, the toggle bars 15,16, are in a straight line,]oringing the When the movable handle 5, is movedto its position farthest from the stationary of the housing, and abuts tangentially to the.

cutter-plate 2, to the extreme in the otherdirection of its stroke, and when the movable handle 5, has been moved inward to its position nearest the stationary handle 4, the toggle bars 15, 16, occupy the opposite extreme angle to that first stated, as shown by dotted lines at 15', 16',in Fig. l, returning the cutter plate 2, to its first position, which said cutter plate thereby receives two motions for each one motion of the handle 5. When the handle 5, is returned from the position indicated in dotted lines to that indicated in full lines in Fig. 1, the double motion of the cutter 2, is repeated in a similar manner, thus causing the shearing operations to be more rapid without increasing the rapidity or range of motion given to the handles of the implement.

In the hair clipping machineillustrated, the handles 4, and 5, are designed to be seized with one hand of the operator, the handle 5, being moved inward by the contraction of the fingers, and returned outwardly by means of a handle-spring 21, composed of a coil, which is supported on the hub 30, and which eccentrically, or otherwise, surrounds the stud 10. The handle spring 21, bears at one extremity between the guides 24, on the handle 5, and at the other extremity, which projects downward, it bears on the end of an adjustable tension screw 22, which is screw-threaded into the housing 3, and may be adjusted by the application of a screw-driver at the exterior spring 21, so that when the tension screw is moved inward the tension is increased, and when moved outward the tension is decreased.

By the employment of the herein described transmission of motion from the movable handle 5, to the toggle bars 15, 16, the greatest possible concentration of the movable parts is obtained, and the handle spring being located apart from the pivot 6, within the housing, afiords space for the handle pivot thus laterally located.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a shearing clipper, the combination of a comb-plate, a movable cutter-plate, toggle bars pivotally connected together, and at one end pivoted to the cutter-plate, and at the other end to a stationary stud, and hearing a toothed segment concentric with said stud, and a pivoted handle bearing a segment concentric with its pivot engaging with said pivoted segment of the toggle bars.

2. In a shearing clipper, the combination with a suitable tool-frame, a shearing device, a pivoted handle having its pivot at one side of the frame of the tool, and means for imparting motion therefrom to the said shearing device, of a coiled spring for returning the handle in one direction after being moved in another, located upon a support within the frame removed from the pivot of said handle and intermediately of the tool frame.

3. In a shearing clipper, the combination with a shearing device, and a pivoted handle or lever having its pivot at one side of the frame of the tool, and means for imparting motion therefrom to the said shearing device, of a handle spring located on a support intermediately of the frame, composed of a coil hearing at one extremity upon said handle, and at the other extremity of said spring a tangential tension screw arranged substantially as and for the purposes described.

4. In a shearing clipper, the combination of a comb plate, a movable cutter plate, a suitable housing, toggle bars pivotally connected together, and at one end pivoted to the cutter plate, and at the other end to the stationary stud in the frame of the tool, and bearing a pivoted segment concentric with said stud, a pivoted handle bearingasegment concentric with its pivot, which is located within one side of thehousing, as shown,and within the central part of said housing a coiled tension spring for the said movable handle, having its coils located upon a support removed from the pivot of said handle, substantially as herein described.

5. In a shearing clipper, the combination with a comb-plate, a movable cutter plate, the toggle bar mechanism, substantially as described, the movable handle, the pivoted segmental connection between the toggle bars and the handle, the pivot of said handle being located at one side of the frame of the tool, a coiled handle spring intermediately located in the frame of the tool, and at the side of said frame opposite the pivot of said movable handle, an adj ustable tension screw for said spring, arranged as herein set forth.

In testimony whereof I have hereunto set my hand this 9th day of January, 1893.

EDWARD A. COOHRAN.

Witnesses:

1-1. F. PARKER, HENRY KLEIN. 

